148 
PACIFIC SCIENCE, VoL XI, April, 1957 
Fig. 6. Asterochiton aureus Mask. Pupal case, dorsal. 
inner ends of the thoracic folds is a tubercle 
bearing 2 or 3 simple pores. The vasiform 
orifice (Fig. 7c) is subtriangular 0.06 mm. 
long and 0.057 mm. wide and acute pos- 
teriorly. Operculum is semicircular with a 
concave anterior margin, 0.04 mm. wide and 
0.027 mm. long. The lingula is long; exposed 
apically and pointed but not acutely so. The 
floor of the orifice is reticulate. Neither the 
lingula nor the posterior apex of the orifice is 
as pointed as is figured by Quaintance and 
Baker (1914). Caudal furrow present, narrow. 
Parasitised pupae are convex, with a narrow 
glassy white wax ring which is sloping and not 
vertical. There are white marks in this rim 
opposite the tracheal pores. The pupa is dark 
brown to black in the central disc with golden 
brown margins. There are strong radial ridges 
coinciding with the four radial pore bands 
and fainter ridges from each side of the ceph- 
alic ridge to the margin and from each side of 
the orifice to the margin. 
adult: Female , antennae: segment 3, 0.23 
mm.; 4, 0.06; 5, 0.07; 6, 0.05; 7, 0.11 mm. 
long; base of 7 is about Va the total length. 
Wings white immaculate, forewing (Fig. 8a) 
1.8 mm. long, Ri present. Hind tibiae (Fig. 
8 b) with 30-34 setae in comb. Operculum 
(Fig. 8c) excised posteriorly with two setae 
on posterior margin, width 0.04 mm., length 
0.025 mm. Lingula widening to apex, trun- 
cate, lobed at each posterior lateral angle and 
with two conical processes between these with 
apical setae. Lingula length 0.035 mm., width 
0.01 mm. 
Fig. 7. Asterochiton aureus Mask. Pupal case: a. Mar- 
gin; h , thoracic tracheal fold and pore; c, vasiform ori- 
fice and abdominal tracheal pore. 
